drivers/media/usb/au0828/au0828-video.c

   1 /*
   2  * Auvitek AU0828 USB Bridge (Analog video support)
   3  *
   4  * Copyright (C) 2009 Devin Heitmueller <dheitmueller@linuxtv.org>
   5  * Copyright (C) 2005-2008 Auvitek International, Ltd.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * As published by the Free Software Foundation; either version 2
  10  * of the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  20  * 02110-1301, USA.
  21  */
  22
  23 /* Developer Notes:
  24  *
  25  * The hardware scaler supported is unimplemented
  26  * AC97 audio support is unimplemented (only i2s audio mode)
  27  *
  28  */
  29
  30 #include "au0828.h"
  31 #include "au8522.h"
  32
  33 #include <linux/module.h>
  34 #include <linux/slab.h>
  35 #include <linux/init.h>
  36 #include <linux/device.h>
  37 #include <media/v4l2-common.h>
  38 #include <media/v4l2-mc.h>
  39 #include <media/v4l2-ioctl.h>
  40 #include <media/v4l2-event.h>
  41 #include <media/tuner.h>
  42 #include "au0828-reg.h"
  43
  44 static DEFINE_MUTEX(au0828_sysfs_lock);
  45
  46 /* ------------------------------------------------------------------
  47         Videobuf operations
  48    ------------------------------------------------------------------*/
  49
  50 static unsigned int isoc_debug;
  51 module_param(isoc_debug, int, 0644);
  52 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
  53
  54 #define au0828_isocdbg(fmt, arg...) \
  55 do {\
  56         if (isoc_debug) { \
  57                 pr_info("au0828 %s :"fmt, \
  58                        __func__ , ##arg);          \
  59         } \
  60   } while (0)
  61
  62 static inline void i2c_gate_ctrl(struct au0828_dev *dev, int val)
  63 {
  64         if (dev->dvb.frontend && dev->dvb.frontend->ops.analog_ops.i2c_gate_ctrl)
  65                 dev->dvb.frontend->ops.analog_ops.i2c_gate_ctrl(dev->dvb.frontend, val);
  66 }
  67
  68 static inline void print_err_status(struct au0828_dev *dev,
  69                                     int packet, int status)
  70 {
  71         char *errmsg = "Unknown";
  72
  73         switch (status) {
  74         case -ENOENT:
  75                 errmsg = "unlinked synchronuously";
  76                 break;
  77         case -ECONNRESET:
  78                 errmsg = "unlinked asynchronuously";
  79                 break;
  80         case -ENOSR:
  81                 errmsg = "Buffer error (overrun)";
  82                 break;
  83         case -EPIPE:
  84                 errmsg = "Stalled (device not responding)";
  85                 break;
  86         case -EOVERFLOW:
  87                 errmsg = "Babble (bad cable?)";
  88                 break;
  89         case -EPROTO:
  90                 errmsg = "Bit-stuff error (bad cable?)";
  91                 break;
  92         case -EILSEQ:
  93                 errmsg = "CRC/Timeout (could be anything)";
  94                 break;
  95         case -ETIME:
  96                 errmsg = "Device does not respond";
  97                 break;
  98         }
  99         if (packet < 0) {
 100                 au0828_isocdbg("URB status %d [%s].\n", status, errmsg);
 101         } else {
 102                 au0828_isocdbg("URB packet %d, status %d [%s].\n",
 103                                packet, status, errmsg);
 104         }
 105 }
 106
 107 static int check_dev(struct au0828_dev *dev)
 108 {
 109         if (test_bit(DEV_DISCONNECTED, &dev->dev_state)) {
 110                 pr_info("v4l2 ioctl: device not present\n");
 111                 return -ENODEV;
 112         }
 113
 114         if (test_bit(DEV_MISCONFIGURED, &dev->dev_state)) {
 115                 pr_info("v4l2 ioctl: device is misconfigured; close and open it again\n");
 116                 return -EIO;
 117         }
 118         return 0;
 119 }
 120
 121 /*
 122  * IRQ callback, called by URB callback
 123  */
 124 static void au0828_irq_callback(struct urb *urb)
 125 {
 126         struct au0828_dmaqueue  *dma_q = urb->context;
 127         struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vidq);
 128         unsigned long flags = 0;
 129         int i;
 130
 131         switch (urb->status) {
 132         case 0:             /* success */
 133         case -ETIMEDOUT:    /* NAK */
 134                 break;
 135         case -ECONNRESET:   /* kill */
 136         case -ENOENT:
 137         case -ESHUTDOWN:
 138                 au0828_isocdbg("au0828_irq_callback called: status kill\n");
 139                 return;
 140         default:            /* unknown error */
 141                 au0828_isocdbg("urb completition error %d.\n", urb->status);
 142                 break;
 143         }
 144
 145         /* Copy data from URB */
 146         spin_lock_irqsave(&dev->slock, flags);
 147         dev->isoc_ctl.isoc_copy(dev, urb);
 148         spin_unlock_irqrestore(&dev->slock, flags);
 149
 150         /* Reset urb buffers */
 151         for (i = 0; i < urb->number_of_packets; i++) {
 152                 urb->iso_frame_desc[i].status = 0;
 153                 urb->iso_frame_desc[i].actual_length = 0;
 154         }
 155         urb->status = 0;
 156
 157         urb->status = usb_submit_urb(urb, GFP_ATOMIC);
 158         if (urb->status) {
 159                 au0828_isocdbg("urb resubmit failed (error=%i)\n",
 160                                urb->status);
 161         }
 162         dev->stream_state = STREAM_ON;
 163 }
 164
 165 /*
 166  * Stop and Deallocate URBs
 167  */
 168 static void au0828_uninit_isoc(struct au0828_dev *dev)
 169 {
 170         struct urb *urb;
 171         int i;
 172
 173         au0828_isocdbg("au0828: called au0828_uninit_isoc\n");
 174
 175         dev->isoc_ctl.nfields = -1;
 176         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 177                 urb = dev->isoc_ctl.urb[i];
 178                 if (urb) {
 179                         if (!irqs_disabled())
 180                                 usb_kill_urb(urb);
 181                         else
 182                                 usb_unlink_urb(urb);
 183
 184                         if (dev->isoc_ctl.transfer_buffer[i]) {
 185                                 usb_free_coherent(dev->usbdev,
 186                                         urb->transfer_buffer_length,
 187                                         dev->isoc_ctl.transfer_buffer[i],
 188                                         urb->transfer_dma);
 189                         }
 190                         usb_free_urb(urb);
 191                         dev->isoc_ctl.urb[i] = NULL;
 192                 }
 193                 dev->isoc_ctl.transfer_buffer[i] = NULL;
 194         }
 195
 196         kfree(dev->isoc_ctl.urb);
 197         kfree(dev->isoc_ctl.transfer_buffer);
 198
 199         dev->isoc_ctl.urb = NULL;
 200         dev->isoc_ctl.transfer_buffer = NULL;
 201         dev->isoc_ctl.num_bufs = 0;
 202
 203         dev->stream_state = STREAM_OFF;
 204 }
 205
 206 /*
 207  * Allocate URBs and start IRQ
 208  */
 209 static int au0828_init_isoc(struct au0828_dev *dev, int max_packets,
 210                             int num_bufs, int max_pkt_size,
 211                             int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb))
 212 {
 213         struct au0828_dmaqueue *dma_q = &dev->vidq;
 214         int i;
 215         int sb_size, pipe;
 216         struct urb *urb;
 217         int j, k;
 218         int rc;
 219
 220         au0828_isocdbg("au0828: called au0828_prepare_isoc\n");
 221
 222         dev->isoc_ctl.isoc_copy = isoc_copy;
 223         dev->isoc_ctl.num_bufs = num_bufs;
 224
 225         dev->isoc_ctl.urb = kzalloc(sizeof(void *)*num_bufs,  GFP_KERNEL);
 226         if (!dev->isoc_ctl.urb) {
 227                 au0828_isocdbg("cannot alloc memory for usb buffers\n");
 228                 return -ENOMEM;
 229         }
 230
 231         dev->isoc_ctl.transfer_buffer = kzalloc(sizeof(void *)*num_bufs,
 232                                               GFP_KERNEL);
 233         if (!dev->isoc_ctl.transfer_buffer) {
 234                 au0828_isocdbg("cannot allocate memory for usb transfer\n");
 235                 kfree(dev->isoc_ctl.urb);
 236                 return -ENOMEM;
 237         }
 238
 239         dev->isoc_ctl.max_pkt_size = max_pkt_size;
 240         dev->isoc_ctl.buf = NULL;
 241
 242         sb_size = max_packets * dev->isoc_ctl.max_pkt_size;
 243
 244         /* allocate urbs and transfer buffers */
 245         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 246                 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
 247                 if (!urb) {
 248                         au0828_uninit_isoc(dev);
 249                         return -ENOMEM;
 250                 }
 251                 dev->isoc_ctl.urb[i] = urb;
 252
 253                 dev->isoc_ctl.transfer_buffer[i] = usb_alloc_coherent(dev->usbdev,
 254                         sb_size, GFP_KERNEL, &urb->transfer_dma);
 255                 if (!dev->isoc_ctl.transfer_buffer[i]) {
 256                         printk("unable to allocate %i bytes for transfer"
 257                                         " buffer %i%s\n",
 258                                         sb_size, i,
 259                                         in_interrupt() ? " while in int" : "");
 260                         au0828_uninit_isoc(dev);
 261                         return -ENOMEM;
 262                 }
 263                 memset(dev->isoc_ctl.transfer_buffer[i], 0, sb_size);
 264
 265                 pipe = usb_rcvisocpipe(dev->usbdev,
 266                                        dev->isoc_in_endpointaddr),
 267
 268                 usb_fill_int_urb(urb, dev->usbdev, pipe,
 269                                  dev->isoc_ctl.transfer_buffer[i], sb_size,
 270                                  au0828_irq_callback, dma_q, 1);
 271
 272                 urb->number_of_packets = max_packets;
 273                 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
 274
 275                 k = 0;
 276                 for (j = 0; j < max_packets; j++) {
 277                         urb->iso_frame_desc[j].offset = k;
 278                         urb->iso_frame_desc[j].length =
 279                                                 dev->isoc_ctl.max_pkt_size;
 280                         k += dev->isoc_ctl.max_pkt_size;
 281                 }
 282         }
 283
 284         /* submit urbs and enables IRQ */
 285         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 286                 rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
 287                 if (rc) {
 288                         au0828_isocdbg("submit of urb %i failed (error=%i)\n",
 289                                        i, rc);
 290                         au0828_uninit_isoc(dev);
 291                         return rc;
 292                 }
 293         }
 294
 295         return 0;
 296 }
 297
 298 /*
 299  * Announces that a buffer were filled and request the next
 300  */
 301 static inline void buffer_filled(struct au0828_dev *dev,
 302                                  struct au0828_dmaqueue *dma_q,
 303                                  struct au0828_buffer *buf)
 304 {
 305         struct vb2_v4l2_buffer *vb = &buf->vb;
 306         struct vb2_queue *q = vb->vb2_buf.vb2_queue;
 307
 308         /* Advice that buffer was filled */
 309         au0828_isocdbg("[%p/%d] wakeup\n", buf, buf->top_field);
 310
 311         if (q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 312                 vb->sequence = dev->frame_count++;
 313         else
 314                 vb->sequence = dev->vbi_frame_count++;
 315
 316         vb->field = V4L2_FIELD_INTERLACED;
 317         vb->vb2_buf.timestamp = ktime_get_ns();
 318         vb2_buffer_done(&vb->vb2_buf, VB2_BUF_STATE_DONE);
 319 }
 320
 321 /*
 322  * Identify the buffer header type and properly handles
 323  */
 324 static void au0828_copy_video(struct au0828_dev *dev,
 325                               struct au0828_dmaqueue  *dma_q,
 326                               struct au0828_buffer *buf,
 327                               unsigned char *p,
 328                               unsigned char *outp, unsigned long len)
 329 {
 330         void *fieldstart, *startwrite, *startread;
 331         int  linesdone, currlinedone, offset, lencopy, remain;
 332         int bytesperline = dev->width << 1; /* Assumes 16-bit depth @@@@ */
 333
 334         if (len == 0)
 335                 return;
 336
 337         if (dma_q->pos + len > buf->length)
 338                 len = buf->length - dma_q->pos;
 339
 340         startread = p;
 341         remain = len;
 342
 343         /* Interlaces frame */
 344         if (buf->top_field)
 345                 fieldstart = outp;
 346         else
 347                 fieldstart = outp + bytesperline;
 348
 349         linesdone = dma_q->pos / bytesperline;
 350         currlinedone = dma_q->pos % bytesperline;
 351         offset = linesdone * bytesperline * 2 + currlinedone;
 352         startwrite = fieldstart + offset;
 353         lencopy = bytesperline - currlinedone;
 354         lencopy = lencopy > remain ? remain : lencopy;
 355
 356         if ((char *)startwrite + lencopy > (char *)outp + buf->length) {
 357                 au0828_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
 358                                ((char *)startwrite + lencopy) -
 359                                ((char *)outp + buf->length));
 360                 remain = (char *)outp + buf->length - (char *)startwrite;
 361                 lencopy = remain;
 362         }
 363         if (lencopy <= 0)
 364                 return;
 365         memcpy(startwrite, startread, lencopy);
 366
 367         remain -= lencopy;
 368
 369         while (remain > 0) {
 370                 startwrite += lencopy + bytesperline;
 371                 startread += lencopy;
 372                 if (bytesperline > remain)
 373                         lencopy = remain;
 374                 else
 375                         lencopy = bytesperline;
 376
 377                 if ((char *)startwrite + lencopy > (char *)outp +
 378                     buf->length) {
 379                         au0828_isocdbg("Overflow %zi bytes past buf end (2)\n",
 380                                        ((char *)startwrite + lencopy) -
 381                                        ((char *)outp + buf->length));
 382                         lencopy = remain = (char *)outp + buf->length -
 383                                            (char *)startwrite;
 384                 }
 385                 if (lencopy <= 0)
 386                         break;
 387
 388                 memcpy(startwrite, startread, lencopy);
 389
 390                 remain -= lencopy;
 391         }
 392
 393         if (offset > 1440) {
 394                 /* We have enough data to check for greenscreen */
 395                 if (outp[0] < 0x60 && outp[1440] < 0x60)
 396                         dev->greenscreen_detected = 1;
 397         }
 398
 399         dma_q->pos += len;
 400 }
 401
 402 /*
 403  * video-buf generic routine to get the next available buffer
 404  */
 405 static inline void get_next_buf(struct au0828_dmaqueue *dma_q,
 406                                 struct au0828_buffer **buf)
 407 {
 408         struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vidq);
 409
 410         if (list_empty(&dma_q->active)) {
 411                 au0828_isocdbg("No active queue to serve\n");
 412                 dev->isoc_ctl.buf = NULL;
 413                 *buf = NULL;
 414                 return;
 415         }
 416
 417         /* Get the next buffer */
 418         *buf = list_entry(dma_q->active.next, struct au0828_buffer, list);
 419         /* Cleans up buffer - Useful for testing for frame/URB loss */
 420         list_del(&(*buf)->list);
 421         dma_q->pos = 0;
 422         (*buf)->vb_buf = (*buf)->mem;
 423         dev->isoc_ctl.buf = *buf;
 424
 425         return;
 426 }
 427
 428 static void au0828_copy_vbi(struct au0828_dev *dev,
 429                               struct au0828_dmaqueue  *dma_q,
 430                               struct au0828_buffer *buf,
 431                               unsigned char *p,
 432                               unsigned char *outp, unsigned long len)
 433 {
 434         unsigned char *startwrite, *startread;
 435         int bytesperline;
 436         int i, j = 0;
 437
 438         if (dev == NULL) {
 439                 au0828_isocdbg("dev is null\n");
 440                 return;
 441         }
 442
 443         if (dma_q == NULL) {
 444                 au0828_isocdbg("dma_q is null\n");
 445                 return;
 446         }
 447         if (buf == NULL)
 448                 return;
 449         if (p == NULL) {
 450                 au0828_isocdbg("p is null\n");
 451                 return;
 452         }
 453         if (outp == NULL) {
 454                 au0828_isocdbg("outp is null\n");
 455                 return;
 456         }
 457
 458         bytesperline = dev->vbi_width;
 459
 460         if (dma_q->pos + len > buf->length)
 461                 len = buf->length - dma_q->pos;
 462
 463         startread = p;
 464         startwrite = outp + (dma_q->pos / 2);
 465
 466         /* Make sure the bottom field populates the second half of the frame */
 467         if (buf->top_field == 0)
 468                 startwrite += bytesperline * dev->vbi_height;
 469
 470         for (i = 0; i < len; i += 2)
 471                 startwrite[j++] = startread[i+1];
 472
 473         dma_q->pos += len;
 474 }
 475
 476
 477 /*
 478  * video-buf generic routine to get the next available VBI buffer
 479  */
 480 static inline void vbi_get_next_buf(struct au0828_dmaqueue *dma_q,
 481                                     struct au0828_buffer **buf)
 482 {
 483         struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vbiq);
 484
 485         if (list_empty(&dma_q->active)) {
 486                 au0828_isocdbg("No active queue to serve\n");
 487                 dev->isoc_ctl.vbi_buf = NULL;
 488                 *buf = NULL;
 489                 return;
 490         }
 491
 492         /* Get the next buffer */
 493         *buf = list_entry(dma_q->active.next, struct au0828_buffer, list);
 494         /* Cleans up buffer - Useful for testing for frame/URB loss */
 495         list_del(&(*buf)->list);
 496         dma_q->pos = 0;
 497         (*buf)->vb_buf = (*buf)->mem;
 498         dev->isoc_ctl.vbi_buf = *buf;
 499         return;
 500 }
 501
 502 /*
 503  * Controls the isoc copy of each urb packet
 504  */
 505 static inline int au0828_isoc_copy(struct au0828_dev *dev, struct urb *urb)
 506 {
 507         struct au0828_buffer    *buf;
 508         struct au0828_buffer    *vbi_buf;
 509         struct au0828_dmaqueue  *dma_q = urb->context;
 510         struct au0828_dmaqueue  *vbi_dma_q = &dev->vbiq;
 511         unsigned char *outp = NULL;
 512         unsigned char *vbioutp = NULL;
 513         int i, len = 0, rc = 1;
 514         unsigned char *p;
 515         unsigned char fbyte;
 516         unsigned int vbi_field_size;
 517         unsigned int remain, lencopy;
 518
 519         if (!dev)
 520                 return 0;
 521
 522         if (test_bit(DEV_DISCONNECTED, &dev->dev_state) ||
 523             test_bit(DEV_MISCONFIGURED, &dev->dev_state))
 524                 return 0;
 525
 526         if (urb->status < 0) {
 527                 print_err_status(dev, -1, urb->status);
 528                 if (urb->status == -ENOENT)
 529                         return 0;
 530         }
 531
 532         buf = dev->isoc_ctl.buf;
 533         if (buf != NULL)
 534                 outp = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
 535
 536         vbi_buf = dev->isoc_ctl.vbi_buf;
 537         if (vbi_buf != NULL)
 538                 vbioutp = vb2_plane_vaddr(&vbi_buf->vb.vb2_buf, 0);
 539
 540         for (i = 0; i < urb->number_of_packets; i++) {
 541                 int status = urb->iso_frame_desc[i].status;
 542
 543                 if (status < 0) {
 544                         print_err_status(dev, i, status);
 545                         if (urb->iso_frame_desc[i].status != -EPROTO)
 546                                 continue;
 547                 }
 548
 549                 if (urb->iso_frame_desc[i].actual_length <= 0)
 550                         continue;
 551
 552                 if (urb->iso_frame_desc[i].actual_length >
 553                                                 dev->max_pkt_size) {
 554                         au0828_isocdbg("packet bigger than packet size");
 555                         continue;
 556                 }
 557
 558                 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 559                 fbyte = p[0];
 560                 len = urb->iso_frame_desc[i].actual_length - 4;
 561                 p += 4;
 562
 563                 if (fbyte & 0x80) {
 564                         len -= 4;
 565                         p += 4;
 566                         au0828_isocdbg("Video frame %s\n",
 567                                        (fbyte & 0x40) ? "odd" : "even");
 568                         if (fbyte & 0x40) {
 569                                 /* VBI */
 570                                 if (vbi_buf != NULL)
 571                                         buffer_filled(dev, vbi_dma_q, vbi_buf);
 572                                 vbi_get_next_buf(vbi_dma_q, &vbi_buf);
 573                                 if (vbi_buf == NULL)
 574                                         vbioutp = NULL;
 575                                 else
 576                                         vbioutp = vb2_plane_vaddr(
 577                                                 &vbi_buf->vb.vb2_buf, 0);
 578
 579                                 /* Video */
 580                                 if (buf != NULL)
 581                                         buffer_filled(dev, dma_q, buf);
 582                                 get_next_buf(dma_q, &buf);
 583                                 if (buf == NULL)
 584                                         outp = NULL;
 585                                 else
 586                                         outp = vb2_plane_vaddr(
 587                                                 &buf->vb.vb2_buf, 0);
 588
 589                                 /* As long as isoc traffic is arriving, keep
 590                                    resetting the timer */
 591                                 if (dev->vid_timeout_running)
 592                                         mod_timer(&dev->vid_timeout,
 593                                                   jiffies + (HZ / 10));
 594                                 if (dev->vbi_timeout_running)
 595                                         mod_timer(&dev->vbi_timeout,
 596                                                   jiffies + (HZ / 10));
 597                         }
 598
 599                         if (buf != NULL) {
 600                                 if (fbyte & 0x40)
 601                                         buf->top_field = 1;
 602                                 else
 603                                         buf->top_field = 0;
 604                         }
 605
 606                         if (vbi_buf != NULL) {
 607                                 if (fbyte & 0x40)
 608                                         vbi_buf->top_field = 1;
 609                                 else
 610                                         vbi_buf->top_field = 0;
 611                         }
 612
 613                         dev->vbi_read = 0;
 614                         vbi_dma_q->pos = 0;
 615                         dma_q->pos = 0;
 616                 }
 617
 618                 vbi_field_size = dev->vbi_width * dev->vbi_height * 2;
 619                 if (dev->vbi_read < vbi_field_size) {
 620                         remain  = vbi_field_size - dev->vbi_read;
 621                         if (len < remain)
 622                                 lencopy = len;
 623                         else
 624                                 lencopy = remain;
 625
 626                         if (vbi_buf != NULL)
 627                                 au0828_copy_vbi(dev, vbi_dma_q, vbi_buf, p,
 628                                                 vbioutp, len);
 629
 630                         len -= lencopy;
 631                         p += lencopy;
 632                         dev->vbi_read += lencopy;
 633                 }
 634
 635                 if (dev->vbi_read >= vbi_field_size && buf != NULL)
 636                         au0828_copy_video(dev, dma_q, buf, p, outp, len);
 637         }
 638         return rc;
 639 }
 640
 641 void au0828_usb_v4l2_media_release(struct au0828_dev *dev)
 642 {
 643 #ifdef CONFIG_MEDIA_CONTROLLER
 644         int i;
 645
 646         for (i = 0; i < AU0828_MAX_INPUT; i++) {
 647                 if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED)
 648                         return;
 649                 media_device_unregister_entity(&dev->input_ent[i]);
 650         }
 651 #endif
 652 }
 653
 654 static void au0828_usb_v4l2_release(struct v4l2_device *v4l2_dev)
 655 {
 656         struct au0828_dev *dev =
 657                 container_of(v4l2_dev, struct au0828_dev, v4l2_dev);
 658
 659         v4l2_ctrl_handler_free(&dev->v4l2_ctrl_hdl);
 660         v4l2_device_unregister(&dev->v4l2_dev);
 661         au0828_usb_v4l2_media_release(dev);
 662         au0828_usb_release(dev);
 663 }
 664
 665 int au0828_v4l2_device_register(struct usb_interface *interface,
 666                                 struct au0828_dev *dev)
 667 {
 668         int retval;
 669
 670         if (AUVI_INPUT(0).type == AU0828_VMUX_UNDEFINED)
 671                 return 0;
 672
 673         /* Create the v4l2_device */
 674 #ifdef CONFIG_MEDIA_CONTROLLER
 675         dev->v4l2_dev.mdev = dev->media_dev;
 676 #endif
 677         retval = v4l2_device_register(&interface->dev, &dev->v4l2_dev);
 678         if (retval) {
 679                 pr_err("%s() v4l2_device_register failed\n",
 680                        __func__);
 681                 return retval;
 682         }
 683
 684         dev->v4l2_dev.release = au0828_usb_v4l2_release;
 685
 686         /* This control handler will inherit the controls from au8522 */
 687         retval = v4l2_ctrl_handler_init(&dev->v4l2_ctrl_hdl, 4);
 688         if (retval) {
 689                 pr_err("%s() v4l2_ctrl_handler_init failed\n",
 690                        __func__);
 691                 return retval;
 692         }
 693         dev->v4l2_dev.ctrl_handler = &dev->v4l2_ctrl_hdl;
 694
 695         return 0;
 696 }
 697
 698 static int queue_setup(struct vb2_queue *vq,
 699                        unsigned int *nbuffers, unsigned int *nplanes,
 700                        unsigned int sizes[], struct device *alloc_devs[])
 701 {
 702         struct au0828_dev *dev = vb2_get_drv_priv(vq);
 703         unsigned long size = dev->height * dev->bytesperline;
 704
 705         if (*nplanes)
 706                 return sizes[0] < size ? -EINVAL : 0;
 707         *nplanes = 1;
 708         sizes[0] = size;
 709         return 0;
 710 }
 711
 712 static int
 713 buffer_prepare(struct vb2_buffer *vb)
 714 {
 715         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 716         struct au0828_buffer *buf = container_of(vbuf,
 717                                 struct au0828_buffer, vb);
 718         struct au0828_dev    *dev = vb2_get_drv_priv(vb->vb2_queue);
 719
 720         buf->length = dev->height * dev->bytesperline;
 721
 722         if (vb2_plane_size(vb, 0) < buf->length) {
 723                 pr_err("%s data will not fit into plane (%lu < %lu)\n",
 724                         __func__, vb2_plane_size(vb, 0), buf->length);
 725                 return -EINVAL;
 726         }
 727         vb2_set_plane_payload(&buf->vb.vb2_buf, 0, buf->length);
 728         return 0;
 729 }
 730
 731 static void
 732 buffer_queue(struct vb2_buffer *vb)
 733 {
 734         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 735         struct au0828_buffer    *buf     = container_of(vbuf,
 736                                                         struct au0828_buffer,
 737                                                         vb);
 738         struct au0828_dev       *dev     = vb2_get_drv_priv(vb->vb2_queue);
 739         struct au0828_dmaqueue  *vidq    = &dev->vidq;
 740         unsigned long flags = 0;
 741
 742         buf->mem = vb2_plane_vaddr(vb, 0);
 743         buf->length = vb2_plane_size(vb, 0);
 744
 745         spin_lock_irqsave(&dev->slock, flags);
 746         list_add_tail(&buf->list, &vidq->active);
 747         spin_unlock_irqrestore(&dev->slock, flags);
 748 }
 749
 750 static int au0828_i2s_init(struct au0828_dev *dev)
 751 {
 752         /* Enable i2s mode */
 753         au0828_writereg(dev, AU0828_AUDIOCTRL_50C, 0x01);
 754         return 0;
 755 }
 756
 757 /*
 758  * Auvitek au0828 analog stream enable
 759  */
 760 static int au0828_analog_stream_enable(struct au0828_dev *d)
 761 {
 762         struct usb_interface *iface;
 763         int ret, h, w;
 764
 765         dprintk(1, "au0828_analog_stream_enable called\n");
 766
 767         iface = usb_ifnum_to_if(d->usbdev, 0);
 768         if (iface && iface->cur_altsetting->desc.bAlternateSetting != 5) {
 769                 dprintk(1, "Changing intf#0 to alt 5\n");
 770                 /* set au0828 interface0 to AS5 here again */
 771                 ret = usb_set_interface(d->usbdev, 0, 5);
 772                 if (ret < 0) {
 773                         pr_info("Au0828 can't set alt setting to 5!\n");
 774                         return -EBUSY;
 775                 }
 776         }
 777
 778         h = d->height / 2 + 2;
 779         w = d->width * 2;
 780
 781         au0828_writereg(d, AU0828_SENSORCTRL_VBI_103, 0x00);
 782         au0828_writereg(d, 0x106, 0x00);
 783         /* set x position */
 784         au0828_writereg(d, 0x110, 0x00);
 785         au0828_writereg(d, 0x111, 0x00);
 786         au0828_writereg(d, 0x114, w & 0xff);
 787         au0828_writereg(d, 0x115, w >> 8);
 788         /* set y position */
 789         au0828_writereg(d, 0x112, 0x00);
 790         au0828_writereg(d, 0x113, 0x00);
 791         au0828_writereg(d, 0x116, h & 0xff);
 792         au0828_writereg(d, 0x117, h >> 8);
 793         au0828_writereg(d, AU0828_SENSORCTRL_100, 0xb3);
 794
 795         return 0;
 796 }
 797
 798 static int au0828_analog_stream_disable(struct au0828_dev *d)
 799 {
 800         dprintk(1, "au0828_analog_stream_disable called\n");
 801         au0828_writereg(d, AU0828_SENSORCTRL_100, 0x0);
 802         return 0;
 803 }
 804
 805 static void au0828_analog_stream_reset(struct au0828_dev *dev)
 806 {
 807         dprintk(1, "au0828_analog_stream_reset called\n");
 808         au0828_writereg(dev, AU0828_SENSORCTRL_100, 0x0);
 809         mdelay(30);
 810         au0828_writereg(dev, AU0828_SENSORCTRL_100, 0xb3);
 811 }
 812
 813 /*
 814  * Some operations needs to stop current streaming
 815  */
 816 static int au0828_stream_interrupt(struct au0828_dev *dev)
 817 {
 818         int ret = 0;
 819
 820         dev->stream_state = STREAM_INTERRUPT;
 821         if (test_bit(DEV_DISCONNECTED, &dev->dev_state))
 822                 return -ENODEV;
 823         else if (ret) {
 824                 set_bit(DEV_MISCONFIGURED, &dev->dev_state);
 825                 dprintk(1, "%s device is misconfigured!\n", __func__);
 826                 return ret;
 827         }
 828         return 0;
 829 }
 830
 831 int au0828_start_analog_streaming(struct vb2_queue *vq, unsigned int count)
 832 {
 833         struct au0828_dev *dev = vb2_get_drv_priv(vq);
 834         int rc = 0;
 835
 836         dprintk(1, "au0828_start_analog_streaming called %d\n",
 837                 dev->streaming_users);
 838
 839         if (vq->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 840                 dev->frame_count = 0;
 841         else
 842                 dev->vbi_frame_count = 0;
 843
 844         if (dev->streaming_users == 0) {
 845                 /* If we were doing ac97 instead of i2s, it would go here...*/
 846                 au0828_i2s_init(dev);
 847                 rc = au0828_init_isoc(dev, AU0828_ISO_PACKETS_PER_URB,
 848                                    AU0828_MAX_ISO_BUFS, dev->max_pkt_size,
 849                                    au0828_isoc_copy);
 850                 if (rc < 0) {
 851                         pr_info("au0828_init_isoc failed\n");
 852                         return rc;
 853                 }
 854
 855                 if (vq->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 856                         v4l2_device_call_all(&dev->v4l2_dev, 0, video,
 857                                                 s_stream, 1);
 858                         dev->vid_timeout_running = 1;
 859                         mod_timer(&dev->vid_timeout, jiffies + (HZ / 10));
 860                 } else if (vq->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
 861                         dev->vbi_timeout_running = 1;
 862                         mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
 863                 }
 864         }
 865         dev->streaming_users++;
 866         return rc;
 867 }
 868
 869 static void au0828_stop_streaming(struct vb2_queue *vq)
 870 {
 871         struct au0828_dev *dev = vb2_get_drv_priv(vq);
 872         struct au0828_dmaqueue *vidq = &dev->vidq;
 873         unsigned long flags = 0;
 874
 875         dprintk(1, "au0828_stop_streaming called %d\n", dev->streaming_users);
 876
 877         if (dev->streaming_users-- == 1)
 878                 au0828_uninit_isoc(dev);
 879
 880         v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_stream, 0);
 881         dev->vid_timeout_running = 0;
 882         del_timer_sync(&dev->vid_timeout);
 883
 884         spin_lock_irqsave(&dev->slock, flags);
 885         if (dev->isoc_ctl.buf != NULL) {
 886                 vb2_buffer_done(&dev->isoc_ctl.buf->vb.vb2_buf,
 887                                 VB2_BUF_STATE_ERROR);
 888                 dev->isoc_ctl.buf = NULL;
 889         }
 890         while (!list_empty(&vidq->active)) {
 891                 struct au0828_buffer *buf;
 892
 893                 buf = list_entry(vidq->active.next, struct au0828_buffer, list);
 894                 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
 895                 list_del(&buf->list);
 896         }
 897         spin_unlock_irqrestore(&dev->slock, flags);
 898 }
 899
 900 void au0828_stop_vbi_streaming(struct vb2_queue *vq)
 901 {
 902         struct au0828_dev *dev = vb2_get_drv_priv(vq);
 903         struct au0828_dmaqueue *vbiq = &dev->vbiq;
 904         unsigned long flags = 0;
 905
 906         dprintk(1, "au0828_stop_vbi_streaming called %d\n",
 907                 dev->streaming_users);
 908
 909         if (dev->streaming_users-- == 1)
 910                 au0828_uninit_isoc(dev);
 911
 912         spin_lock_irqsave(&dev->slock, flags);
 913         if (dev->isoc_ctl.vbi_buf != NULL) {
 914                 vb2_buffer_done(&dev->isoc_ctl.vbi_buf->vb.vb2_buf,
 915                                 VB2_BUF_STATE_ERROR);
 916                 dev->isoc_ctl.vbi_buf = NULL;
 917         }
 918         while (!list_empty(&vbiq->active)) {
 919                 struct au0828_buffer *buf;
 920
 921                 buf = list_entry(vbiq->active.next, struct au0828_buffer, list);
 922                 list_del(&buf->list);
 923                 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
 924         }
 925         spin_unlock_irqrestore(&dev->slock, flags);
 926
 927         dev->vbi_timeout_running = 0;
 928         del_timer_sync(&dev->vbi_timeout);
 929 }
 930
 931 static const struct vb2_ops au0828_video_qops = {
 932         .queue_setup     = queue_setup,
 933         .buf_prepare     = buffer_prepare,
 934         .buf_queue       = buffer_queue,
 935         .start_streaming = au0828_start_analog_streaming,
 936         .stop_streaming  = au0828_stop_streaming,
 937         .wait_prepare    = vb2_ops_wait_prepare,
 938         .wait_finish     = vb2_ops_wait_finish,
 939 };
 940
 941 /* ------------------------------------------------------------------
 942    V4L2 interface
 943    ------------------------------------------------------------------*/
 944 /*
 945  * au0828_analog_unregister
 946  * unregister v4l2 devices
 947  */
 948 int au0828_analog_unregister(struct au0828_dev *dev)
 949 {
 950         dprintk(1, "au0828_analog_unregister called\n");
 951
 952         /* No analog TV */
 953         if (AUVI_INPUT(0).type == AU0828_VMUX_UNDEFINED)
 954                 return 0;
 955
 956         mutex_lock(&au0828_sysfs_lock);
 957         video_unregister_device(&dev->vdev);
 958         video_unregister_device(&dev->vbi_dev);
 959         mutex_unlock(&au0828_sysfs_lock);
 960
 961         v4l2_device_disconnect(&dev->v4l2_dev);
 962         v4l2_device_put(&dev->v4l2_dev);
 963
 964         return 1;
 965 }
 966
 967 /* This function ensures that video frames continue to be delivered even if
 968    the ITU-656 input isn't receiving any data (thereby preventing applications
 969    such as tvtime from hanging) */
 970 static void au0828_vid_buffer_timeout(unsigned long data)
 971 {
 972         struct au0828_dev *dev = (struct au0828_dev *) data;
 973         struct au0828_dmaqueue *dma_q = &dev->vidq;
 974         struct au0828_buffer *buf;
 975         unsigned char *vid_data;
 976         unsigned long flags = 0;
 977
 978         spin_lock_irqsave(&dev->slock, flags);
 979
 980         buf = dev->isoc_ctl.buf;
 981         if (buf != NULL) {
 982                 vid_data = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
 983                 memset(vid_data, 0x00, buf->length); /* Blank green frame */
 984                 buffer_filled(dev, dma_q, buf);
 985         }
 986         get_next_buf(dma_q, &buf);
 987
 988         if (dev->vid_timeout_running == 1)
 989                 mod_timer(&dev->vid_timeout, jiffies + (HZ / 10));
 990
 991         spin_unlock_irqrestore(&dev->slock, flags);
 992 }
 993
 994 static void au0828_vbi_buffer_timeout(unsigned long data)
 995 {
 996         struct au0828_dev *dev = (struct au0828_dev *) data;
 997         struct au0828_dmaqueue *dma_q = &dev->vbiq;
 998         struct au0828_buffer *buf;
 999         unsigned char *vbi_data;
1000         unsigned long flags = 0;
1001
1002         spin_lock_irqsave(&dev->slock, flags);
1003
1004         buf = dev->isoc_ctl.vbi_buf;
1005         if (buf != NULL) {
1006                 vbi_data = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
1007                 memset(vbi_data, 0x00, buf->length);
1008                 buffer_filled(dev, dma_q, buf);
1009         }
1010         vbi_get_next_buf(dma_q, &buf);
1011
1012         if (dev->vbi_timeout_running == 1)
1013                 mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
1014         spin_unlock_irqrestore(&dev->slock, flags);
1015 }
1016
1017 static int au0828_v4l2_open(struct file *filp)
1018 {
1019         struct au0828_dev *dev = video_drvdata(filp);
1020         int ret;
1021
1022         dprintk(1,
1023                 "%s called std_set %d dev_state %ld stream users %d users %d\n",
1024                 __func__, dev->std_set_in_tuner_core, dev->dev_state,
1025                 dev->streaming_users, dev->users);
1026
1027         if (mutex_lock_interruptible(&dev->lock))
1028                 return -ERESTARTSYS;
1029
1030         ret = v4l2_fh_open(filp);
1031         if (ret) {
1032                 au0828_isocdbg("%s: v4l2_fh_open() returned error %d\n",
1033                                 __func__, ret);
1034                 mutex_unlock(&dev->lock);
1035                 return ret;
1036         }
1037
1038         if (dev->users == 0) {
1039                 au0828_analog_stream_enable(dev);
1040                 au0828_analog_stream_reset(dev);
1041                 dev->stream_state = STREAM_OFF;
1042                 set_bit(DEV_INITIALIZED, &dev->dev_state);
1043         }
1044         dev->users++;
1045         mutex_unlock(&dev->lock);
1046         return ret;
1047 }
1048
1049 static int au0828_v4l2_close(struct file *filp)
1050 {
1051         int ret;
1052         struct au0828_dev *dev = video_drvdata(filp);
1053         struct video_device *vdev = video_devdata(filp);
1054
1055         dprintk(1,
1056                 "%s called std_set %d dev_state %ld stream users %d users %d\n",
1057                 __func__, dev->std_set_in_tuner_core, dev->dev_state,
1058                 dev->streaming_users, dev->users);
1059
1060         mutex_lock(&dev->lock);
1061         if (vdev->vfl_type == VFL_TYPE_GRABBER && dev->vid_timeout_running) {
1062                 /* Cancel timeout thread in case they didn't call streamoff */
1063                 dev->vid_timeout_running = 0;
1064                 del_timer_sync(&dev->vid_timeout);
1065         } else if (vdev->vfl_type == VFL_TYPE_VBI &&
1066                         dev->vbi_timeout_running) {
1067                 /* Cancel timeout thread in case they didn't call streamoff */
1068                 dev->vbi_timeout_running = 0;
1069                 del_timer_sync(&dev->vbi_timeout);
1070         }
1071
1072         if (test_bit(DEV_DISCONNECTED, &dev->dev_state))
1073                 goto end;
1074
1075         if (dev->users == 1) {
1076                 /*
1077                  * Avoid putting tuner in sleep if DVB or ALSA are
1078                  * streaming.
1079                  *
1080                  * On most USB devices  like au0828 the tuner can
1081                  * be safely put in sleep stare here if ALSA isn't
1082                  * streaming. Exceptions are some very old USB tuner
1083                  * models such as em28xx-based WinTV USB2 which have
1084                  * a separate audio output jack. The devices that have
1085                  * a separate audio output jack have analog tuners,
1086                  * like Philips FM1236. Those devices are always on,
1087                  * so the s_power callback are silently ignored.
1088                  * So, the current logic here does the following:
1089                  * Disable (put tuner to sleep) when
1090                  * - ALSA and DVB aren't not streaming;
1091                  * - the last V4L2 file handler is closed.
1092                  *
1093                  * FIXME:
1094                  *
1095                  * Additionally, this logic could be improved to
1096                  * disable the media source if the above conditions
1097                  * are met and if the device:
1098                  * - doesn't have a separate audio out plug (or
1099                  * - doesn't use a silicon tuner like xc2028/3028/4000/5000).
1100                  *
1101                  * Once this additional logic is in place, a callback
1102                  * is needed to enable the media source and power on
1103                  * the tuner, for radio to work.
1104                 */
1105                 ret = v4l_enable_media_source(vdev);
1106                 if (ret == 0)
1107                         v4l2_device_call_all(&dev->v4l2_dev, 0, core,
1108                                              s_power, 0);
1109                 dev->std_set_in_tuner_core = 0;
1110
1111                 /* When close the device, set the usb intf0 into alt0 to free
1112                    USB bandwidth */
1113                 ret = usb_set_interface(dev->usbdev, 0, 0);
1114                 if (ret < 0)
1115                         pr_info("Au0828 can't set alternate to 0!\n");
1116         }
1117 end:
1118         _vb2_fop_release(filp, NULL);
1119         dev->users--;
1120         mutex_unlock(&dev->lock);
1121         return 0;
1122 }
1123
1124 /* Must be called with dev->lock held */
1125 static void au0828_init_tuner(struct au0828_dev *dev)
1126 {
1127         struct v4l2_frequency f = {
1128                 .frequency = dev->ctrl_freq,
1129                 .type = V4L2_TUNER_ANALOG_TV,
1130         };
1131
1132         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1133                 dev->std_set_in_tuner_core, dev->dev_state);
1134
1135         if (dev->std_set_in_tuner_core)
1136                 return;
1137         dev->std_set_in_tuner_core = 1;
1138         i2c_gate_ctrl(dev, 1);
1139         /* If we've never sent the standard in tuner core, do so now.
1140            We don't do this at device probe because we don't want to
1141            incur the cost of a firmware load */
1142         v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_std, dev->std);
1143         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f);
1144         i2c_gate_ctrl(dev, 0);
1145 }
1146
1147 static int au0828_set_format(struct au0828_dev *dev, unsigned int cmd,
1148                              struct v4l2_format *format)
1149 {
1150         int ret;
1151         int width = format->fmt.pix.width;
1152         int height = format->fmt.pix.height;
1153
1154         /* If they are demanding a format other than the one we support,
1155            bail out (tvtime asks for UYVY and then retries with YUYV) */
1156         if (format->fmt.pix.pixelformat != V4L2_PIX_FMT_UYVY)
1157                 return -EINVAL;
1158
1159         /* format->fmt.pix.width only support 720 and height 480 */
1160         if (width != 720)
1161                 width = 720;
1162         if (height != 480)
1163                 height = 480;
1164
1165         format->fmt.pix.width = width;
1166         format->fmt.pix.height = height;
1167         format->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
1168         format->fmt.pix.bytesperline = width * 2;
1169         format->fmt.pix.sizeimage = width * height * 2;
1170         format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1171         format->fmt.pix.field = V4L2_FIELD_INTERLACED;
1172         format->fmt.pix.priv = 0;
1173
1174         if (cmd == VIDIOC_TRY_FMT)
1175                 return 0;
1176
1177         /* maybe set new image format, driver current only support 720*480 */
1178         dev->width = width;
1179         dev->height = height;
1180         dev->frame_size = width * height * 2;
1181         dev->field_size = width * height;
1182         dev->bytesperline = width * 2;
1183
1184         if (dev->stream_state == STREAM_ON) {
1185                 dprintk(1, "VIDIOC_SET_FMT: interrupting stream!\n");
1186                 ret = au0828_stream_interrupt(dev);
1187                 if (ret != 0) {
1188                         dprintk(1, "error interrupting video stream!\n");
1189                         return ret;
1190                 }
1191         }
1192
1193         au0828_analog_stream_enable(dev);
1194
1195         return 0;
1196 }
1197
1198 static int vidioc_querycap(struct file *file, void  *priv,
1199                            struct v4l2_capability *cap)
1200 {
1201         struct video_device *vdev = video_devdata(file);
1202         struct au0828_dev *dev = video_drvdata(file);
1203
1204         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1205                 dev->std_set_in_tuner_core, dev->dev_state);
1206
1207         strlcpy(cap->driver, "au0828", sizeof(cap->driver));
1208         strlcpy(cap->card, dev->board.name, sizeof(cap->card));
1209         usb_make_path(dev->usbdev, cap->bus_info, sizeof(cap->bus_info));
1210
1211         /* set the device capabilities */
1212         cap->device_caps = V4L2_CAP_AUDIO |
1213                 V4L2_CAP_READWRITE |
1214                 V4L2_CAP_STREAMING |
1215                 V4L2_CAP_TUNER;
1216         if (vdev->vfl_type == VFL_TYPE_GRABBER)
1217                 cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE;
1218         else
1219                 cap->device_caps |= V4L2_CAP_VBI_CAPTURE;
1220         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS |
1221                 V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE;
1222         return 0;
1223 }
1224
1225 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
1226                                         struct v4l2_fmtdesc *f)
1227 {
1228         if (f->index)
1229                 return -EINVAL;
1230
1231         dprintk(1, "%s called\n", __func__);
1232
1233         f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1234         strcpy(f->description, "Packed YUV2");
1235
1236         f->flags = 0;
1237         f->pixelformat = V4L2_PIX_FMT_UYVY;
1238
1239         return 0;
1240 }
1241
1242 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
1243                                         struct v4l2_format *f)
1244 {
1245         struct au0828_dev *dev = video_drvdata(file);
1246
1247         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1248                 dev->std_set_in_tuner_core, dev->dev_state);
1249
1250         f->fmt.pix.width = dev->width;
1251         f->fmt.pix.height = dev->height;
1252         f->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
1253         f->fmt.pix.bytesperline = dev->bytesperline;
1254         f->fmt.pix.sizeimage = dev->frame_size;
1255         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; /* NTSC/PAL */
1256         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1257         f->fmt.pix.priv = 0;
1258         return 0;
1259 }
1260
1261 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
1262                                   struct v4l2_format *f)
1263 {
1264         struct au0828_dev *dev = video_drvdata(file);
1265
1266         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1267                 dev->std_set_in_tuner_core, dev->dev_state);
1268
1269         return au0828_set_format(dev, VIDIOC_TRY_FMT, f);
1270 }
1271
1272 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1273                                 struct v4l2_format *f)
1274 {
1275         struct au0828_dev *dev = video_drvdata(file);
1276         int rc;
1277
1278         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1279                 dev->std_set_in_tuner_core, dev->dev_state);
1280
1281         rc = check_dev(dev);
1282         if (rc < 0)
1283                 return rc;
1284
1285         if (vb2_is_busy(&dev->vb_vidq)) {
1286                 pr_info("%s queue busy\n", __func__);
1287                 rc = -EBUSY;
1288                 goto out;
1289         }
1290
1291         rc = au0828_set_format(dev, VIDIOC_S_FMT, f);
1292 out:
1293         return rc;
1294 }
1295
1296 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1297 {
1298         struct au0828_dev *dev = video_drvdata(file);
1299
1300         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1301                 dev->std_set_in_tuner_core, dev->dev_state);
1302
1303         if (norm == dev->std)
1304                 return 0;
1305
1306         if (dev->streaming_users > 0)
1307                 return -EBUSY;
1308
1309         dev->std = norm;
1310
1311         au0828_init_tuner(dev);
1312
1313         i2c_gate_ctrl(dev, 1);
1314
1315         /*
1316          * FIXME: when we support something other than 60Hz standards,
1317          * we are going to have to make the au0828 bridge adjust the size
1318          * of its capture buffer, which is currently hardcoded at 720x480
1319          */
1320
1321         v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_std, norm);
1322
1323         i2c_gate_ctrl(dev, 0);
1324
1325         return 0;
1326 }
1327
1328 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
1329 {
1330         struct au0828_dev *dev = video_drvdata(file);
1331
1332         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1333                 dev->std_set_in_tuner_core, dev->dev_state);
1334
1335         *norm = dev->std;
1336         return 0;
1337 }
1338
1339 static int vidioc_enum_input(struct file *file, void *priv,
1340                                 struct v4l2_input *input)
1341 {
1342         struct au0828_dev *dev = video_drvdata(file);
1343         unsigned int tmp;
1344
1345         static const char *inames[] = {
1346                 [AU0828_VMUX_UNDEFINED] = "Undefined",
1347                 [AU0828_VMUX_COMPOSITE] = "Composite",
1348                 [AU0828_VMUX_SVIDEO] = "S-Video",
1349                 [AU0828_VMUX_CABLE] = "Cable TV",
1350                 [AU0828_VMUX_TELEVISION] = "Television",
1351                 [AU0828_VMUX_DVB] = "DVB",
1352         };
1353
1354         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1355                 dev->std_set_in_tuner_core, dev->dev_state);
1356
1357         tmp = input->index;
1358
1359         if (tmp >= AU0828_MAX_INPUT)
1360                 return -EINVAL;
1361         if (AUVI_INPUT(tmp).type == 0)
1362                 return -EINVAL;
1363
1364         input->index = tmp;
1365         strcpy(input->name, inames[AUVI_INPUT(tmp).type]);
1366         if ((AUVI_INPUT(tmp).type == AU0828_VMUX_TELEVISION) ||
1367             (AUVI_INPUT(tmp).type == AU0828_VMUX_CABLE)) {
1368                 input->type |= V4L2_INPUT_TYPE_TUNER;
1369                 input->audioset = 1;
1370         } else {
1371                 input->type |= V4L2_INPUT_TYPE_CAMERA;
1372                 input->audioset = 2;
1373         }
1374
1375         input->std = dev->vdev.tvnorms;
1376
1377         return 0;
1378 }
1379
1380 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1381 {
1382         struct au0828_dev *dev = video_drvdata(file);
1383
1384         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1385                 dev->std_set_in_tuner_core, dev->dev_state);
1386
1387         *i = dev->ctrl_input;
1388         return 0;
1389 }
1390
1391 static void au0828_s_input(struct au0828_dev *dev, int index)
1392 {
1393         int i;
1394
1395         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1396                 dev->std_set_in_tuner_core, dev->dev_state);
1397
1398         switch (AUVI_INPUT(index).type) {
1399         case AU0828_VMUX_SVIDEO:
1400                 dev->input_type = AU0828_VMUX_SVIDEO;
1401                 dev->ctrl_ainput = 1;
1402                 break;
1403         case AU0828_VMUX_COMPOSITE:
1404                 dev->input_type = AU0828_VMUX_COMPOSITE;
1405                 dev->ctrl_ainput = 1;
1406                 break;
1407         case AU0828_VMUX_TELEVISION:
1408                 dev->input_type = AU0828_VMUX_TELEVISION;
1409                 dev->ctrl_ainput = 0;
1410                 break;
1411         default:
1412                 dprintk(1, "unknown input type set [%d]\n",
1413                         AUVI_INPUT(index).type);
1414                 return;
1415         }
1416
1417         dev->ctrl_input = index;
1418
1419         v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
1420                         AUVI_INPUT(index).vmux, 0, 0);
1421
1422         for (i = 0; i < AU0828_MAX_INPUT; i++) {
1423                 int enable = 0;
1424                 if (AUVI_INPUT(i).audio_setup == NULL)
1425                         continue;
1426
1427                 if (i == index)
1428                         enable = 1;
1429                 else
1430                         enable = 0;
1431                 if (enable) {
1432                         (AUVI_INPUT(i).audio_setup)(dev, enable);
1433                 } else {
1434                         /* Make sure we leave it turned on if some
1435                            other input is routed to this callback */
1436                         if ((AUVI_INPUT(i).audio_setup) !=
1437                             ((AUVI_INPUT(index).audio_setup))) {
1438                                 (AUVI_INPUT(i).audio_setup)(dev, enable);
1439                         }
1440                 }
1441         }
1442
1443         v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
1444                         AUVI_INPUT(index).amux, 0, 0);
1445 }
1446
1447 static int vidioc_s_input(struct file *file, void *priv, unsigned int index)
1448 {
1449         struct au0828_dev *dev = video_drvdata(file);
1450         struct video_device *vfd = video_devdata(file);
1451
1452         dprintk(1, "VIDIOC_S_INPUT in function %s, input=%d\n", __func__,
1453                 index);
1454         if (index >= AU0828_MAX_INPUT)
1455                 return -EINVAL;
1456         if (AUVI_INPUT(index).type == 0)
1457                 return -EINVAL;
1458
1459         if (dev->ctrl_input == index)
1460                 return 0;
1461
1462         au0828_s_input(dev, index);
1463
1464         /*
1465          * Input has been changed. Disable the media source
1466          * associated with the old input and enable source
1467          * for the newly set input
1468          */
1469         v4l_disable_media_source(vfd);
1470         return v4l_enable_media_source(vfd);
1471 }
1472
1473 static int vidioc_enumaudio(struct file *file, void *priv, struct v4l2_audio *a)
1474 {
1475         if (a->index > 1)
1476                 return -EINVAL;
1477
1478         dprintk(1, "%s called\n", __func__);
1479
1480         if (a->index == 0)
1481                 strcpy(a->name, "Television");
1482         else
1483                 strcpy(a->name, "Line in");
1484
1485         a->capability = V4L2_AUDCAP_STEREO;
1486         return 0;
1487 }
1488
1489 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1490 {
1491         struct au0828_dev *dev = video_drvdata(file);
1492
1493         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1494                 dev->std_set_in_tuner_core, dev->dev_state);
1495
1496         a->index = dev->ctrl_ainput;
1497         if (a->index == 0)
1498                 strcpy(a->name, "Television");
1499         else
1500                 strcpy(a->name, "Line in");
1501
1502         a->capability = V4L2_AUDCAP_STEREO;
1503         return 0;
1504 }
1505
1506 static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio *a)
1507 {
1508         struct au0828_dev *dev = video_drvdata(file);
1509
1510         if (a->index != dev->ctrl_ainput)
1511                 return -EINVAL;
1512
1513         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1514                 dev->std_set_in_tuner_core, dev->dev_state);
1515         return 0;
1516 }
1517
1518 static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1519 {
1520         struct au0828_dev *dev = video_drvdata(file);
1521         struct video_device *vfd = video_devdata(file);
1522         int ret;
1523
1524         if (t->index != 0)
1525                 return -EINVAL;
1526
1527         ret = v4l_enable_media_source(vfd);
1528         if (ret)
1529                 return ret;
1530
1531         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1532                 dev->std_set_in_tuner_core, dev->dev_state);
1533
1534         strcpy(t->name, "Auvitek tuner");
1535
1536         au0828_init_tuner(dev);
1537         i2c_gate_ctrl(dev, 1);
1538         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1539         i2c_gate_ctrl(dev, 0);
1540         return 0;
1541 }
1542
1543 static int vidioc_s_tuner(struct file *file, void *priv,
1544                                 const struct v4l2_tuner *t)
1545 {
1546         struct au0828_dev *dev = video_drvdata(file);
1547
1548         if (t->index != 0)
1549                 return -EINVAL;
1550
1551         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1552                 dev->std_set_in_tuner_core, dev->dev_state);
1553
1554         au0828_init_tuner(dev);
1555         i2c_gate_ctrl(dev, 1);
1556         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1557         i2c_gate_ctrl(dev, 0);
1558
1559         dprintk(1, "VIDIOC_S_TUNER: signal = %x, afc = %x\n", t->signal,
1560                 t->afc);
1561
1562         return 0;
1563
1564 }
1565
1566 static int vidioc_g_frequency(struct file *file, void *priv,
1567                                 struct v4l2_frequency *freq)
1568 {
1569         struct au0828_dev *dev = video_drvdata(file);
1570
1571         if (freq->tuner != 0)
1572                 return -EINVAL;
1573         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1574                 dev->std_set_in_tuner_core, dev->dev_state);
1575         freq->frequency = dev->ctrl_freq;
1576         return 0;
1577 }
1578
1579 static int vidioc_s_frequency(struct file *file, void *priv,
1580                                 const struct v4l2_frequency *freq)
1581 {
1582         struct au0828_dev *dev = video_drvdata(file);
1583         struct v4l2_frequency new_freq = *freq;
1584
1585         if (freq->tuner != 0)
1586                 return -EINVAL;
1587
1588         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1589                 dev->std_set_in_tuner_core, dev->dev_state);
1590
1591         au0828_init_tuner(dev);
1592         i2c_gate_ctrl(dev, 1);
1593
1594         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, freq);
1595         /* Get the actual set (and possibly clamped) frequency */
1596         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, &new_freq);
1597         dev->ctrl_freq = new_freq.frequency;
1598
1599         i2c_gate_ctrl(dev, 0);
1600
1601         au0828_analog_stream_reset(dev);
1602
1603         return 0;
1604 }
1605
1606
1607 /* RAW VBI ioctls */
1608
1609 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1610                                 struct v4l2_format *format)
1611 {
1612         struct au0828_dev *dev = video_drvdata(file);
1613
1614         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1615                 dev->std_set_in_tuner_core, dev->dev_state);
1616
1617         format->fmt.vbi.samples_per_line = dev->vbi_width;
1618         format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1619         format->fmt.vbi.offset = 0;
1620         format->fmt.vbi.flags = 0;
1621         format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
1622
1623         format->fmt.vbi.count[0] = dev->vbi_height;
1624         format->fmt.vbi.count[1] = dev->vbi_height;
1625         format->fmt.vbi.start[0] = 21;
1626         format->fmt.vbi.start[1] = 284;
1627         memset(format->fmt.vbi.reserved, 0, sizeof(format->fmt.vbi.reserved));
1628
1629         return 0;
1630 }
1631
1632 static int vidioc_cropcap(struct file *file, void *priv,
1633                           struct v4l2_cropcap *cc)
1634 {
1635         struct au0828_dev *dev = video_drvdata(file);
1636
1637         if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1638                 return -EINVAL;
1639
1640         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1641                 dev->std_set_in_tuner_core, dev->dev_state);
1642
1643         cc->bounds.left = 0;
1644         cc->bounds.top = 0;
1645         cc->bounds.width = dev->width;
1646         cc->bounds.height = dev->height;
1647
1648         cc->defrect = cc->bounds;
1649
1650         cc->pixelaspect.numerator = 54;
1651         cc->pixelaspect.denominator = 59;
1652
1653         return 0;
1654 }
1655
1656 #ifdef CONFIG_VIDEO_ADV_DEBUG
1657 static int vidioc_g_register(struct file *file, void *priv,
1658                              struct v4l2_dbg_register *reg)
1659 {
1660         struct au0828_dev *dev = video_drvdata(file);
1661
1662         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1663                 dev->std_set_in_tuner_core, dev->dev_state);
1664
1665         reg->val = au0828_read(dev, reg->reg);
1666         reg->size = 1;
1667         return 0;
1668 }
1669
1670 static int vidioc_s_register(struct file *file, void *priv,
1671                              const struct v4l2_dbg_register *reg)
1672 {
1673         struct au0828_dev *dev = video_drvdata(file);
1674
1675         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1676                 dev->std_set_in_tuner_core, dev->dev_state);
1677
1678         return au0828_writereg(dev, reg->reg, reg->val);
1679 }
1680 #endif
1681
1682 static int vidioc_log_status(struct file *file, void *fh)
1683 {
1684         struct video_device *vdev = video_devdata(file);
1685
1686         dprintk(1, "%s called\n", __func__);
1687
1688         v4l2_ctrl_log_status(file, fh);
1689         v4l2_device_call_all(vdev->v4l2_dev, 0, core, log_status);
1690         return 0;
1691 }
1692
1693 void au0828_v4l2_suspend(struct au0828_dev *dev)
1694 {
1695         struct urb *urb;
1696         int i;
1697
1698         pr_info("stopping V4L2\n");
1699
1700         if (dev->stream_state == STREAM_ON) {
1701                 pr_info("stopping V4L2 active URBs\n");
1702                 au0828_analog_stream_disable(dev);
1703                 /* stop urbs */
1704                 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
1705                         urb = dev->isoc_ctl.urb[i];
1706                         if (urb) {
1707                                 if (!irqs_disabled())
1708                                         usb_kill_urb(urb);
1709                                 else
1710                                         usb_unlink_urb(urb);
1711                         }
1712                 }
1713         }
1714
1715         if (dev->vid_timeout_running)
1716                 del_timer_sync(&dev->vid_timeout);
1717         if (dev->vbi_timeout_running)
1718                 del_timer_sync(&dev->vbi_timeout);
1719 }
1720
1721 void au0828_v4l2_resume(struct au0828_dev *dev)
1722 {
1723         int i, rc;
1724
1725         pr_info("restarting V4L2\n");
1726
1727         if (dev->stream_state == STREAM_ON) {
1728                 au0828_stream_interrupt(dev);
1729                 au0828_init_tuner(dev);
1730         }
1731
1732         if (dev->vid_timeout_running)
1733                 mod_timer(&dev->vid_timeout, jiffies + (HZ / 10));
1734         if (dev->vbi_timeout_running)
1735                 mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
1736
1737         /* If we were doing ac97 instead of i2s, it would go here...*/
1738         au0828_i2s_init(dev);
1739
1740         au0828_analog_stream_enable(dev);
1741
1742         if (!(dev->stream_state == STREAM_ON)) {
1743                 au0828_analog_stream_reset(dev);
1744                 /* submit urbs */
1745                 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
1746                         rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
1747                         if (rc) {
1748                                 au0828_isocdbg("submit of urb %i failed (error=%i)\n",
1749                                                i, rc);
1750                                 au0828_uninit_isoc(dev);
1751                         }
1752                 }
1753         }
1754 }
1755
1756 static struct v4l2_file_operations au0828_v4l_fops = {
1757         .owner      = THIS_MODULE,
1758         .open       = au0828_v4l2_open,
1759         .release    = au0828_v4l2_close,
1760         .read       = vb2_fop_read,
1761         .poll       = vb2_fop_poll,
1762         .mmap       = vb2_fop_mmap,
1763         .unlocked_ioctl = video_ioctl2,
1764 };
1765
1766 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1767         .vidioc_querycap            = vidioc_querycap,
1768         .vidioc_enum_fmt_vid_cap    = vidioc_enum_fmt_vid_cap,
1769         .vidioc_g_fmt_vid_cap       = vidioc_g_fmt_vid_cap,
1770         .vidioc_try_fmt_vid_cap     = vidioc_try_fmt_vid_cap,
1771         .vidioc_s_fmt_vid_cap       = vidioc_s_fmt_vid_cap,
1772         .vidioc_g_fmt_vbi_cap       = vidioc_g_fmt_vbi_cap,
1773         .vidioc_try_fmt_vbi_cap     = vidioc_g_fmt_vbi_cap,
1774         .vidioc_s_fmt_vbi_cap       = vidioc_g_fmt_vbi_cap,
1775         .vidioc_enumaudio           = vidioc_enumaudio,
1776         .vidioc_g_audio             = vidioc_g_audio,
1777         .vidioc_s_audio             = vidioc_s_audio,
1778         .vidioc_cropcap             = vidioc_cropcap,
1779
1780         .vidioc_reqbufs             = vb2_ioctl_reqbufs,
1781         .vidioc_create_bufs         = vb2_ioctl_create_bufs,
1782         .vidioc_prepare_buf         = vb2_ioctl_prepare_buf,
1783         .vidioc_querybuf            = vb2_ioctl_querybuf,
1784         .vidioc_qbuf                = vb2_ioctl_qbuf,
1785         .vidioc_dqbuf               = vb2_ioctl_dqbuf,
1786         .vidioc_expbuf               = vb2_ioctl_expbuf,
1787
1788         .vidioc_s_std               = vidioc_s_std,
1789         .vidioc_g_std               = vidioc_g_std,
1790         .vidioc_enum_input          = vidioc_enum_input,
1791         .vidioc_g_input             = vidioc_g_input,
1792         .vidioc_s_input             = vidioc_s_input,
1793
1794         .vidioc_streamon            = vb2_ioctl_streamon,
1795         .vidioc_streamoff           = vb2_ioctl_streamoff,
1796
1797         .vidioc_g_tuner             = vidioc_g_tuner,
1798         .vidioc_s_tuner             = vidioc_s_tuner,
1799         .vidioc_g_frequency         = vidioc_g_frequency,
1800         .vidioc_s_frequency         = vidioc_s_frequency,
1801 #ifdef CONFIG_VIDEO_ADV_DEBUG
1802         .vidioc_g_register          = vidioc_g_register,
1803         .vidioc_s_register          = vidioc_s_register,
1804 #endif
1805         .vidioc_log_status          = vidioc_log_status,
1806         .vidioc_subscribe_event     = v4l2_ctrl_subscribe_event,
1807         .vidioc_unsubscribe_event   = v4l2_event_unsubscribe,
1808 };
1809
1810 static const struct video_device au0828_video_template = {
1811         .fops                       = &au0828_v4l_fops,
1812         .release                    = video_device_release_empty,
1813         .ioctl_ops                  = &video_ioctl_ops,
1814         .tvnorms                    = V4L2_STD_NTSC_M | V4L2_STD_PAL_M,
1815 };
1816
1817 static int au0828_vb2_setup(struct au0828_dev *dev)
1818 {
1819         int rc;
1820         struct vb2_queue *q;
1821
1822         /* Setup Videobuf2 for Video capture */
1823         q = &dev->vb_vidq;
1824         q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1825         q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1826         q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1827         q->drv_priv = dev;
1828         q->buf_struct_size = sizeof(struct au0828_buffer);
1829         q->ops = &au0828_video_qops;
1830         q->mem_ops = &vb2_vmalloc_memops;
1831
1832         rc = vb2_queue_init(q);
1833         if (rc < 0)
1834                 return rc;
1835
1836         /* Setup Videobuf2 for VBI capture */
1837         q = &dev->vb_vbiq;
1838         q->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1839         q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1840         q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1841         q->drv_priv = dev;
1842         q->buf_struct_size = sizeof(struct au0828_buffer);
1843         q->ops = &au0828_vbi_qops;
1844         q->mem_ops = &vb2_vmalloc_memops;
1845
1846         rc = vb2_queue_init(q);
1847         if (rc < 0)
1848                 return rc;
1849
1850         return 0;
1851 }
1852
1853 static void au0828_analog_create_entities(struct au0828_dev *dev)
1854 {
1855 #if defined(CONFIG_MEDIA_CONTROLLER)
1856         static const char * const inames[] = {
1857                 [AU0828_VMUX_COMPOSITE] = "Composite",
1858                 [AU0828_VMUX_SVIDEO] = "S-Video",
1859                 [AU0828_VMUX_CABLE] = "Cable TV",
1860                 [AU0828_VMUX_TELEVISION] = "Television",
1861                 [AU0828_VMUX_DVB] = "DVB",
1862         };
1863         int ret, i;
1864
1865         /* Initialize Video and VBI pads */
1866         dev->video_pad.flags = MEDIA_PAD_FL_SINK;
1867         ret = media_entity_pads_init(&dev->vdev.entity, 1, &dev->video_pad);
1868         if (ret < 0)
1869                 pr_err("failed to initialize video media entity!\n");
1870
1871         dev->vbi_pad.flags = MEDIA_PAD_FL_SINK;
1872         ret = media_entity_pads_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad);
1873         if (ret < 0)
1874                 pr_err("failed to initialize vbi media entity!\n");
1875
1876         /* Create entities for each input connector */
1877         for (i = 0; i < AU0828_MAX_INPUT; i++) {
1878                 struct media_entity *ent = &dev->input_ent[i];
1879
1880                 if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED)
1881                         break;
1882
1883                 ent->name = inames[AUVI_INPUT(i).type];
1884                 ent->flags = MEDIA_ENT_FL_CONNECTOR;
1885                 dev->input_pad[i].flags = MEDIA_PAD_FL_SOURCE;
1886
1887                 switch (AUVI_INPUT(i).type) {
1888                 case AU0828_VMUX_COMPOSITE:
1889                         ent->function = MEDIA_ENT_F_CONN_COMPOSITE;
1890                         break;
1891                 case AU0828_VMUX_SVIDEO:
1892                         ent->function = MEDIA_ENT_F_CONN_SVIDEO;
1893                         break;
1894                 case AU0828_VMUX_CABLE:
1895                 case AU0828_VMUX_TELEVISION:
1896                 case AU0828_VMUX_DVB:
1897                 default: /* Just to shut up a warning */
1898                         ent->function = MEDIA_ENT_F_CONN_RF;
1899                         break;
1900                 }
1901
1902                 ret = media_entity_pads_init(ent, 1, &dev->input_pad[i]);
1903                 if (ret < 0)
1904                         pr_err("failed to initialize input pad[%d]!\n", i);
1905
1906                 ret = media_device_register_entity(dev->media_dev, ent);
1907                 if (ret < 0)
1908                         pr_err("failed to register input entity %d!\n", i);
1909         }
1910 #endif
1911 }
1912
1913 /**************************************************************************/
1914
1915 int au0828_analog_register(struct au0828_dev *dev,
1916                            struct usb_interface *interface)
1917 {
1918         int retval = -ENOMEM;
1919         struct usb_host_interface *iface_desc;
1920         struct usb_endpoint_descriptor *endpoint;
1921         int i, ret;
1922
1923         dprintk(1, "au0828_analog_register called for intf#%d!\n",
1924                 interface->cur_altsetting->desc.bInterfaceNumber);
1925
1926         /* No analog TV */
1927         if (AUVI_INPUT(0).type == AU0828_VMUX_UNDEFINED)
1928                 return 0;
1929
1930         /* set au0828 usb interface0 to as5 */
1931         retval = usb_set_interface(dev->usbdev,
1932                         interface->cur_altsetting->desc.bInterfaceNumber, 5);
1933         if (retval != 0) {
1934                 pr_info("Failure setting usb interface0 to as5\n");
1935                 return retval;
1936         }
1937
1938         /* Figure out which endpoint has the isoc interface */
1939         iface_desc = interface->cur_altsetting;
1940         for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
1941                 endpoint = &iface_desc->endpoint[i].desc;
1942                 if (((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
1943                      == USB_DIR_IN) &&
1944                     ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1945                      == USB_ENDPOINT_XFER_ISOC)) {
1946
1947                         /* we find our isoc in endpoint */
1948                         u16 tmp = le16_to_cpu(endpoint->wMaxPacketSize);
1949                         dev->max_pkt_size = (tmp & 0x07ff) *
1950                                 (((tmp & 0x1800) >> 11) + 1);
1951                         dev->isoc_in_endpointaddr = endpoint->bEndpointAddress;
1952                         dprintk(1,
1953                                 "Found isoc endpoint 0x%02x, max size = %d\n",
1954                                 dev->isoc_in_endpointaddr, dev->max_pkt_size);
1955                 }
1956         }
1957         if (!(dev->isoc_in_endpointaddr)) {
1958                 pr_info("Could not locate isoc endpoint\n");
1959                 return -ENODEV;
1960         }
1961
1962         init_waitqueue_head(&dev->open);
1963         spin_lock_init(&dev->slock);
1964
1965         /* init video dma queues */
1966         INIT_LIST_HEAD(&dev->vidq.active);
1967         INIT_LIST_HEAD(&dev->vbiq.active);
1968
1969         setup_timer(&dev->vid_timeout, au0828_vid_buffer_timeout,
1970                     (unsigned long)dev);
1971         setup_timer(&dev->vbi_timeout, au0828_vbi_buffer_timeout,
1972                     (unsigned long)dev);
1973
1974         dev->width = NTSC_STD_W;
1975         dev->height = NTSC_STD_H;
1976         dev->field_size = dev->width * dev->height;
1977         dev->frame_size = dev->field_size << 1;
1978         dev->bytesperline = dev->width << 1;
1979         dev->vbi_width = 720;
1980         dev->vbi_height = 1;
1981         dev->ctrl_ainput = 0;
1982         dev->ctrl_freq = 960;
1983         dev->std = V4L2_STD_NTSC_M;
1984         /* Default input is TV Tuner */
1985         au0828_s_input(dev, 0);
1986
1987         mutex_init(&dev->vb_queue_lock);
1988         mutex_init(&dev->vb_vbi_queue_lock);
1989
1990         /* Fill the video capture device struct */
1991         dev->vdev = au0828_video_template;
1992         dev->vdev.v4l2_dev = &dev->v4l2_dev;
1993         dev->vdev.lock = &dev->lock;
1994         dev->vdev.queue = &dev->vb_vidq;
1995         dev->vdev.queue->lock = &dev->vb_queue_lock;
1996         strcpy(dev->vdev.name, "au0828a video");
1997
1998         /* Setup the VBI device */
1999         dev->vbi_dev = au0828_video_template;
2000         dev->vbi_dev.v4l2_dev = &dev->v4l2_dev;
2001         dev->vbi_dev.lock = &dev->lock;
2002         dev->vbi_dev.queue = &dev->vb_vbiq;
2003         dev->vbi_dev.queue->lock = &dev->vb_vbi_queue_lock;
2004         strcpy(dev->vbi_dev.name, "au0828a vbi");
2005
2006         /* Init entities at the Media Controller */
2007         au0828_analog_create_entities(dev);
2008
2009         /* initialize videobuf2 stuff */
2010         retval = au0828_vb2_setup(dev);
2011         if (retval != 0) {
2012                 dprintk(1, "unable to setup videobuf2 queues (error = %d).\n",
2013                         retval);
2014                 return -ENODEV;
2015         }
2016
2017         /* Register the v4l2 device */
2018         video_set_drvdata(&dev->vdev, dev);
2019         retval = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, -1);
2020         if (retval != 0) {
2021                 dprintk(1, "unable to register video device (error = %d).\n",
2022                         retval);
2023                 ret = -ENODEV;
2024                 goto err_reg_vdev;
2025         }
2026
2027         /* Register the vbi device */
2028         video_set_drvdata(&dev->vbi_dev, dev);
2029         retval = video_register_device(&dev->vbi_dev, VFL_TYPE_VBI, -1);
2030         if (retval != 0) {
2031                 dprintk(1, "unable to register vbi device (error = %d).\n",
2032                         retval);
2033                 ret = -ENODEV;
2034                 goto err_reg_vbi_dev;
2035         }
2036
2037 #ifdef CONFIG_MEDIA_CONTROLLER
2038         retval = v4l2_mc_create_media_graph(dev->media_dev);
2039         if (retval) {
2040                 pr_err("%s() au0282_dev_register failed to create graph\n",
2041                         __func__);
2042                 ret = -ENODEV;
2043                 goto err_reg_vbi_dev;
2044         }
2045 #endif
2046
2047         dprintk(1, "%s completed!\n", __func__);
2048
2049         return 0;
2050
2051 err_reg_vbi_dev:
2052         video_unregister_device(&dev->vdev);
2053 err_reg_vdev:
2054         vb2_queue_release(&dev->vb_vidq);
2055         vb2_queue_release(&dev->vb_vbiq);
2056         return ret;
2057 }
2058